.header{
    background: rgba(0,0,0,.8);
}
.header .nav{
    list-style-type: none;
}
.header .nav>li{
    float: left;
    padding:15px 25px;
    color:#FFF;
}
.header .nav>li>a{
    display: block;
    color:#FFF;
    text-decoration: none;
}
.header .nav>li>a:hover{
    color: #FFF;
}
.nav>li:hover{
    cursor: pointer;
    font-weight: 700;
    background: rgba(0,0,0,.9);
}
.body{
    min-height:500px;
}